Li-Ion Charger Related Question

Hi Sir,

I have a 5000mAh Li-ion battery. Can i select a charger for my Li-ion battery having the following specifications, the product is available on ebay? I will be thankful if you can help me with a better option or alternate options over this. Thanks & Regards,Akshay G. Anarse

Operating Temperature for this module is as per the Industrial grade (-10 to +85 )

Solving the Circuit Problem

Hi Akshay,

Your Li-ion Battery is rated at 5000mAH, so charging it at a 1 amp rate could cause a slow charging of the battery, and could take many hours, therefore selecting the charger for your Li-ion battery is OK, but will have this drawback.

In order to charge your battery at a faster rate, a preferable rate would be 3 amp, higher charging rates up to 5 amps could be tried but that would cause some heating of the battery and therefore might demand a temperature controlled circuit.

A fan cooling could be used for keeping the heat of the battery under control so that the battery is able to charge quickly at a 1C rate.

Here "C" refers to the AH rating of the battery, therefore 1C signifies charging of the Li-ion at its full 5 amp rate.

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Dear,I've had a small palm sized i-pod given by a friend which was not charged, so when i kept it to charge after some time the i-pod started getting warm. After unplugging the i-pod it didn't accept any charge.When upon opening I've figured out a small li-ion battery which is just 100mAH.My queries-What does it indicate if the battery is getting warm during charging? What happens to the internal resistance of the battery?Does li-ion battery have any liquid inside that dries up over time?

Fortunately, the i-pod circuit is working fine when connected to another good cell.

Hi,slight warming while charging is not bad and is normal especially with Li-ion cells, but heating above around 45 degrees must be avoidedinternal resistance will increase on heating and will cause an increased inefficiency.Internally it has the chemical LiCoO2 in electrolyte form sandwiched between its +/- electrode plates

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Swagatam is an ardent electronic researcher, inventor, schematic/PCB designer, manufacturer, and an avid publisher. He is the founder of https://www.homemade-circuits.com/where visitors get the opportunity to read many of his innovative electronic circuit ideas, and also solve crucial circuit related problems through comment discussion.